condition mean min max 4 h after light 16.65935 15.8834 17.4353 8 h after light 11.62425 11.2535 11.995 12 h after light 13.79555 13.6829 13.9082 4 h after dark 20.050849999999997 19.6942 20.4075 8 h after dark 23.4568 22.7288 24.1848 12 h after dark 23.8716 23.1204 24.6228